A while back, I had to get scaling numbers for something that did multipage forms where individual pages might refresh themselves from the server depending on w

A while back, I had to get scaling numbers for something that did multipage forms where individual pages might refresh themselves from the server depending on what dropdowns you picked, might pull option lists if certain questions were visible, etc. I ended up using Selenium on a giant pile of cloud VMs, because the $$$$/run looked cheaper than my wild guess about the dev time for a more efficient tool. Do you know of any guides or general overviews for using JMeter (Or Gatling or such) for this, or maybe for determining the appropriate degree to categorize and randomize sessions (some of those option listings were pretty expensive, and it wouldn't have been good to just skip them)? From my brief look at the time, it seemed that it'd be a major pain and I'd have to figure out any script logic on my own without a whole lot in the way of pre-written guides.